유니온메인페이지로가기
백색 용융알루미나(F/A)

World class qualityWhite fused alumina (F/A)

WFA performs outstanding refractoriness & high erosion resistance and is the key aggregate for refractory bricks and castable.

  • 순백색 Fire resistance
  • 수강성 Erosion resistance
  • 고강도 Wear resistance
INQUIRY FOR THE DETAILS
World-class quality products
The Best PRODUCT 최고의 내화제품을 위한 파트너
The Best PRODUCT Best partner for best refractories
The Best PRODUCT 내화제품의 품질을 높이는 기술
The Best TECHNOLOGY Constant R&D process
Only for TECHNOLOGY 고객 중심의 제품 생산 시스템
The Best PROCESS Customer-oriented manufacturing system
The Best PRODUCTBest partner for
best refractories
White fused alumina(F/A)

Union WFA is used as aggregates in refractory bricks and castables on the characteristics of high thermal shock resistance and great corrosion resistance. High purity alumina is fused at 2,300℃ and re-crystallized into white artificial corundum, which is highly preferred in the refractory industry.

  • High purity corundum
  • Outstanding corrosion resistance
  • Chemically-stabilized
The Best TECHNOLOGY Constant
R&D process
Characteristics and application

White fused alumina is used for refractory aggregates in bricks and castables. It shows high performance over strength and wear resistance. The products are diversified into various grains and also can be customized by user’s demand.

  • •Aggregates (shaped / monolithic)
  • •Refractory bricks
  • •Excellent strength and wear resistance
Chemical Properties
Item Coarse Size Fine Size
Specification Typical data Specification Typical data Specification Typical data
Chemical
composition 		Al2O3 99.0 Min. 99.20~99.60 99.0 Min. 99.15~99.50 99.0 Min. 99.15~99.50
Fe2O3 0.08 Max. 0.02~0.04 0.08 Max. 0.03~0.06 0.08 Max. 0.03~0.06
Na2O 0.35 Max. 0.27~0.33 0.40 Max. 0.30~0.38 0.45 Max. 0.35~0.43
SiO2 0.05 Max. 0.02~0.04 0.05 Max. 0.03~0.05 0.05 Max. 0.03~0.05
True Specific Gravity 3.90 Min. 3.94~3.96 3.90 Min. 3.92~3.95 3.90 Min. 3.92~3.95
Size 20-10, 8-5, 5-3
3-1, 1-0, 1-0.5		 0.5F, 0.3F
220F		 325F
Size distribution- Coarse Grades
Products Size(mm) Specification Typical Range
20~10mm +10 90 Min 91~97
8~5mm +8.0 10 Max 0~5
+4.75 90 Max 91~95
5~3mm +4.75 10 Max 2~8
+4.00 10~35 15~33
-2.80 10 Max 3~8
3~1mm +2.80 10 Max 2~8
+2.00 20~50 25~45
-1.80 10 Max 2~8
1~0mm +1.00 5 Max 0~4
+0.50 25~60 30~55
+0.21 60~90 65~87
-0.075 10 Max 2~8
1~0.5mm +1.00 5 Max 1~4
+0.71 30 Min 38~60
+0.50 90 Min 92~96
- Fine Grades
Products Size(mm) Specification Typical Range
0.5F +0.50 5 Max 0~4
+0.25 30~50 33~47
+0.075 80Min 85~95
+0.3F +0.30 5 Max 0~4
+0.212 10~40 13~38
+0.075 85 Min 88~95
220F +0.30 3 Max 0~2
+0.075 20~35 22~33
-0.0750 65~80 67~78
325F +0.045 5 Max 0~4
The Best PROCESS Customer-oriented
manufacturing system
Process wfa 제조 공정